CN209526910U - A kind of linear dusk-to-dawn driving circuit - Google Patents
A kind of linear dusk-to-dawn driving circuit Download PDFInfo
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- CN209526910U CN209526910U CN201821073010.8U CN201821073010U CN209526910U CN 209526910 U CN209526910 U CN 209526910U CN 201821073010 U CN201821073010 U CN 201821073010U CN 209526910 U CN209526910 U CN 209526910U
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- linear
- driving circuit
- rectifier bridge
- output end
- cathode output
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/30—Semiconductor lamps, e.g. solid state lamps [SSL] light emitting diodes [LED] or organic LED [OLED]
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Abstract
The utility model provides a kind of linear dusk-to-dawn driving circuit, comprising: rectifier bridge, filter circuit, linear voltage-stabilizing circuit, linear major loop, light-dependent control element and switching circuit；For AC power source to the single-chip microcontroller U1 power supply in linear major loop after rectifier bridge rectification and linear voltage-stabilizing circuit pressure stabilizing, single-chip microcontroller U1 has a sampling end and control terminal；When the light-dependent control element is connected, sampling end sampled signal makes the control terminal of single-chip microcontroller U1 control the switching circuit conducting, so that the main linear circuit conducting.The utility model provides a kind of linear dusk-to-dawn driving circuit, at low cost.
Description
Technical field
The utility model relates to driving circuit more particularly to LED drive circuits.
Background technique
In order to drive LED and single-chip microcontroller simultaneously, for existing driving circuit using Switching Power Supply, cost is too high.
The utility model is completely new driving method, does not influence driving capability not only, also greatly reduces cost.
Utility model content
Technical problem underlying to be solved in the utility model is to provide a kind of linear dusk-to-dawn driving circuit, at
This is low.
In order to solve the above technical problems, the utility model provides a kind of linear dusk-to-dawn driving circuit,
It include: rectifier bridge, filter circuit, linear voltage-stabilizing circuit, linear major loop, light-dependent control element and switching circuit；
AC power source supplies after rectifier bridge rectification and linear voltage-stabilizing circuit pressure stabilizing to the single-chip microcontroller U1 in linear major loop
Electricity, single-chip microcontroller U1 have a sampling end and control terminal；When the light-dependent control element is connected, sampling end sampled signal makes single-chip microcontroller U1
Control terminal control switching circuit conducting so that the main linear circuit conducting.
In a preferred embodiment: the linear voltage-stabilizing circuit includes switching tube Q1, voltage-stabiliser tube D1, resistance R1, R2；It is described
The cathode output end of one end connection rectifier bridge of resistance R1, the other end are connected to the collector and resistance R2 of switching tube Q1
One end；The base stage of switching tube Q1 is connected to the other end of resistance R2 and the cathode of voltage-stabiliser tube D1；The anode of voltage-stabiliser tube D1 connects
To the cathode output end of rectifier bridge.
In a preferred embodiment: being connected with capacitor between the emitter of switching tube Q1 and the cathode output end of rectifier bridge
C2。
In a preferred embodiment: the light-dependent control element is photodiode S1, and one end is connected to the hair of switching tube Q1
Emitter-base bandgap grading, the other end are connected to the first stitch of single-chip microcontroller U1；The emitter of the switching tube Q1 is additionally coupled to the of single-chip microcontroller U1
Six stitch.
In a preferred embodiment: the switching circuit includes resistance R4, R5 and switching tube Q2；The of the single-chip microcontroller U1
Four stitch are connected to the grid of switching tube Q2 by resistance R4, resistance R5 is connected to the grid of switching tube Q2 and the cathode of rectifier bridge
Between output end.
In a preferred embodiment: the drain electrode of the switching tube Q2 is the cathode output end of driving circuit, and source electrode is connected to
The cathode output end of rectifier bridge；The cathode output end of the rectifier bridge is the cathode output end of driving circuit；Described main linear time
The input terminal on road is respectively connected to the anode and cathode output end of the driving circuit.
In a preferred embodiment: filtering electrolysis is connected between the cathode output end and cathode output end of the rectifier bridge
C1。
In a preferred embodiment: the first stitch of the single-chip microcontroller U1 is also connected to by resistance R3 and capacitor C3 respectively
The cathode output end of rectifier bridge.
Compared to the prior art, the technical solution of the utility model have it is following the utility model has the advantages that
The utility model provides a kind of linear dusk-to-dawn driving circuit, and existing Switching Power Supply driving method is changed
For high-voltage linear pressure stabilizing driving method.The driving circuit is to generate a stable low pressure by switching tube Q1 and voltage-stabiliser tube D1 to supply
Single-chip microcontroller U1, single-chip microcontroller U1 is given to pass through the Signal-controlled switch pipe Q2 on and off that photodiode S1 reacts again, thus real
Now to the control in main linear circuit.This case have it is at low cost, route is stable, production difficulty is low, device is few, reduce failure rate, subtract
Few maintenance capacity improves the advantages of production capacity.
Detailed description of the invention
Fig. 1 is the circuit diagram of the preferred embodiment in the utility model.
Specific embodiment
In order to better understand the technical solution of the utility model, the utility model is described in detail with reference to the accompanying drawing and provides
Embodiment.
With reference to Fig. 1, a kind of linear dusk-to-dawn driving circuit, comprising: rectifier bridge DB1, filter circuit, linear voltage stabilization
Circuit, linear major loop, light-dependent control element and switching circuit；
AC power source is after rectifier bridge DB1 rectification and linear voltage-stabilizing circuit pressure stabilizing to the single-chip microcontroller U1 in linear major loop
Power supply, single-chip microcontroller U1 have a sampling end and control terminal；When the light-dependent control element is connected, sampling end sampled signal makes single-chip microcontroller
The control terminal of U1 controls the switching circuit conducting, so that the main linear circuit conducting.
Specifically, the linear voltage-stabilizing circuit includes switching tube Q1, voltage-stabiliser tube D1, resistance R1, R2；The resistance R1's
One end connects the cathode output end of rectifier bridge DB1, and the other end is connected to the collector of switching tube Q1 and one end of resistance R2；
The base stage of switching tube Q1 is connected to the other end of resistance R2 and the cathode of voltage-stabiliser tube D1；The anode of voltage-stabiliser tube D1 is connected to whole
Flow the cathode output end of bridge DB1.
Capacitor C2 is connected between the emitter of switching tube Q1 and the cathode output end of rectifier bridge DB1.
The light-dependent control element is photodiode S1, and one end is connected to the emitter of switching tube Q1, and the other end is connected to
The first stitch of single-chip microcontroller U1, first stitch are the sampling end；The emitter of the switching tube Q1 is additionally coupled to monolithic
The 6th stitch of machine U1 is powered.
The switching circuit includes resistance R4, R5 and switching tube Q2；The 4th stitch of the single-chip microcontroller U1 passes through resistance R4
It is connected to the grid of switching tube Q2, resistance R5 is connected between the grid of switching tube Q2 and the cathode output end of rectifier bridge DB1.
The drain electrode of the switching tube Q2 is the cathode output end of driving circuit, and the cathode that source electrode is connected to rectifier bridge DB1 is defeated
Outlet；The cathode output end of the rectifier bridge DB1 is the cathode output end of driving circuit；The input terminal in the main linear circuit point
It is not connected to the anode and cathode output end of the driving circuit.
Filtering electrolysis C1 is connected between the cathode output end and cathode output end of the rectifier bridge DB1.The single-chip microcontroller
The first stitch of U1 is also connected to the cathode output end of rectifier bridge DB1 by resistance R3 and capacitor C3 respectively.
The utility model provides a kind of linear dusk-to-dawn driving circuit, and existing Switching Power Supply driving method is changed
For high-voltage linear pressure stabilizing driving method.The driving circuit is to generate a stable low pressure by switching tube Q1 and voltage-stabiliser tube D1 to supply
Single-chip microcontroller U1, single-chip microcontroller U1 is given to pass through the Signal-controlled switch pipe Q2 on and off that photodiode S1 reacts again, thus real
Now to the control in main linear circuit.This case have it is at low cost, route is stable, production difficulty is low, device is few, reduce failure rate, subtract
Few maintenance capacity improves the advantages of production capacity.
Obviously, the above embodiments of the present invention is merely examples for clearly illustrating the present invention, and
It is not limitations of the embodiments of the present invention.For those of ordinary skill in the art, in above description
On the basis of can also make other variations or changes in different ways.There is no need and unable to give all embodiments
Exhaustion.Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention etc., should be included in
Within the protection scope of the utility model claims.
Claims (8)
1. a kind of linear dusk-to-dawn driving circuit, characterized by comprising: rectifier bridge, filter circuit, linear voltage stabilization electricity
Road, linear major loop, light-dependent control element and switching circuit；
AC power source is after rectifier bridge rectification and linear voltage-stabilizing circuit pressure stabilizing to the single-chip microcontroller U1 power supply in linear major loop, list
Piece machine U1 has a sampling end and control terminal；When the light-dependent control element is connected, sampling end sampled signal makes the control of single-chip microcontroller U1
End processed controls the switching circuit conducting, so that the linear major loop conducting.
2. a kind of linear dusk-to-dawn driving circuit according to claim 1, it is characterised in that: the linear voltage stabilization
Circuit includes switching tube Q1, voltage-stabiliser tube D1, resistance R1, R2；The cathode output end of one end connection rectifier bridge of the resistance R1, separately
One end is connected to the collector of switching tube Q1 and one end of resistance R2；The base stage of switching tube Q1 is connected to the another of resistance R2
The cathode of end and voltage-stabiliser tube D1；The anode of voltage-stabiliser tube D1 is connected to the cathode output end of rectifier bridge.
3. a kind of linear dusk-to-dawn driving circuit according to claim 2, it is characterised in that: the hair of switching tube Q1
Capacitor C2 is connected between emitter-base bandgap grading and the cathode output end of rectifier bridge.
4. a kind of linear dusk-to-dawn driving circuit according to claim 3, it is characterised in that: the light-dependent control element
For photodiode S1, one end is connected to the emitter of switching tube Q1, and the other end is connected to the first stitch of single-chip microcontroller U1；Institute
The emitter for stating switching tube Q1 is additionally coupled to the 6th stitch of single-chip microcontroller U1.
5. a kind of linear dusk-to-dawn driving circuit according to claim 4, it is characterised in that: the switching circuit
Including resistance R4, R5 and switching tube Q2；The 4th stitch of the single-chip microcontroller U1 be connected to by resistance R4 switching tube Q2 grid,
Resistance R5 is connected between the grid of switching tube Q2 and the cathode output end of rectifier bridge.
6. a kind of linear dusk-to-dawn driving circuit according to claim 5, it is characterised in that: the switching tube Q2
Drain electrode be driving circuit cathode output end, source electrode is connected to the cathode output end of rectifier bridge；The anode of the rectifier bridge is defeated
Outlet is the cathode output end of driving circuit；The input terminal of the linear major loop is respectively connected to the anode of the driving circuit
And cathode output end.
7. a kind of linear dusk-to-dawn driving circuit according to claim 6, it is characterised in that: the rectifier bridge
Filtering electrolysis C1 is connected between cathode output end and cathode output end.
8. a kind of linear dusk-to-dawn driving circuit according to claim 7, it is characterised in that: the single-chip microcontroller U1
The first stitch the cathode output end of rectifier bridge is also connected to by resistance R3 and capacitor C3 respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821073010.8U CN209526910U (en) | 2018-07-06 | 2018-07-06 | A kind of linear dusk-to-dawn driving circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821073010.8U CN209526910U (en) | 2018-07-06 | 2018-07-06 | A kind of linear dusk-to-dawn driving circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209526910U true CN209526910U (en) | 2019-10-22 |
Family
ID=68212510
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821073010.8U Active CN209526910U (en) | 2018-07-06 | 2018-07-06 | A kind of linear dusk-to-dawn driving circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209526910U (en) |
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2018
- 2018-07-06 CN CN201821073010.8U patent/CN209526910U/en active Active
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